Chicago Cubs starting pitcher Justin Germano throws during the second inning of a baseball game with the Washington Nationals at Nationals Park, Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Bryce Harper sides safely into third for a triple during the first inning of a baseball game with the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Kurt Suzuki hits a three-run home run during the second inning of a baseball game with the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Bryce Harper, right, celebrates with Adam LaRoche after scoring during the first inning of a baseball game with the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Jordan Zimmermann throws during the first inning of a baseball game with the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Bryce Harper (34) celebrates with teammates after scoring during the first inning of a baseball game with the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Jordan Zimmermannl, de los Nacionales de Washington, lanza contra los Cachorros de Chicago, en la primera entrada del juego del jueves 6 de septiembre de 2012, en Washington. (Foto AP/Alex Brandon)

Washington Nationals catcher Kurt Suzuki waves to fans after a baseball game with the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

A fan holds two brooms as Chicago Cubs' Josh Vitters, foreground, prepares to bat during the eighth inning of a baseball game with the Washington Nationals at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. 3(AP Photo/Alex Brandon)

Chicago Cubs relief pitcher Michael Bowden wipes his face during the eighth inning of a baseball game with the Washington Nationals at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Chicago Cubs catcher Steve Clevenger changes his glove during the fifth inning of a baseball game with the Washington Nationals at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals' batter Bryce Harper (34) is restrained by home plate umpire Jerry Lane, left, and Chicago Cubs catcher Steve Clevenger after an inside pitch during the sixth inning of a baseball game at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The benches and bullpens emptied onto the field and the Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals' Michael Morse (38), is restrained by Nationals manager Davey Johnson when both benches and bullpens emptied onto the field during the sixth inning of a baseball game with the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals batting coach Rick Eckstein (4), center, restrains Nationals relief pitcher Sean Burnett after the benches and bullpens emptied onto the field during the sixth inning of a baseball game at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Chicago Cubs first baseman Anthony Rizzo (44) is shoved by Washington Nationals relief pitcher Ryan Mattheus, right, during the sixth inning of a baseball game at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals shortstop Ian Desmond (20) is restrained by umpire Bill Miller when both benches and bullpens emptied onto the field during the sixth inning of a baseball game against the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals' batter Bryce Harper (34) is restrained by home plate umpire Jerry Lane, left, and Chicago Cubs catcher Steve Clevenger after an inside pitch as Nationals' Jayson Werth (28) and others come onto the field during the sixth inning of a baseball game at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The benches and bullpens emptied onto the field and the Nationals won 9-2. (AP Photo/Alex Brandon)

Chicago Cubs bench coach Jamie Quirk, far left, has words with Washington Nationals third base coach Bo Porter (16) as they are separated by manager Dale Sveum, center, during the fifth inning of a baseball game at Nationals Park Thursday, Sept. 6, 2012, in Washington. Both benches and bullpens emptied onto the field and the Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Jordan Zimmermann throws during the first inning of a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals' Kurt Suzuki celebrates with his teammates after his three run homer during the second inning of a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals manager Davey Johnson watches from the dugout during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Stephen Strasburg watches from the dugout during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Stephen Strasburg watches from the dugout during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Stephen Strasburg, left, watches from the dugout, with manager Davey Johnson, right, during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. (AP Photo/Alex Brandon)

Washington Nationals batting coach Rick Eckstein, left, talks with Jayson Werth during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals manager Davey Johnson, left, listens to third base coach Bo Porter during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals starting pitcher Jordan Zimmermann sits in the dugout during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals manager Davey Johnson watches from the dugout during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals' Bryce Harper listens to home plate umpire Jerry Lane during the sixth inning of a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals manager Davey Johnson watches from the dugout during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals' Adam LaRoche hits a two run homer during the sixth inning of a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Washington Nationals manager Davey Johnson watches from the dugout during a baseball game with the Chicago Cubs at Nationals Park Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Umpires try to restore order during the sixth inning when both benches and bullpens emptied onto the field of a baseball game between the Washington Nationals and the Chicago Cubs at Nationals Park, Thursday, Sept. 6, 2012, in Washington. The Nationals won 9-2. (AP Photo/Alex Brandon)

Chicago Cubs bench coach Jamie Quirk, far left, has words with Washington Nationals third base coach Bo Porter (16) as they are separated by manager Dale Sveum, center, during the fifth inning of a baseball game at Nationals Park Thursday, Sept. 6, 2012, in Washington. Both benches and bullpens emptied onto the field and the Nationals won 9-2. (AP Photo/Alex Brandon)